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2.4 LED Indicators
This amplifier has 1 power LED indicator which is marked as "Power Indicator
(D1)" ." Power Indicator (D1)" will be illuminated in green when power-up.
FIGURE 2-4 LED INDICATOR
2.5 Volume Control
K1 and K2 of SW1, SW2 and SW3 have been factory preset as ON to make sure weak
gain of three channels. This can prevent chip from permanent damage caused by
overheat when input signal amplitude is over range. On the other conditions of gain
setting, it is recommended that the output signal amplitude is no larger than the power
supply voltage once the input signal reaches the peak.
For example, the maximum amplitude of the input signal is no more than 323mV RMS
when power supply voltage is 36V, load impedance is 6 ohm and the gain is set at 37.6
dB. The other circumstances can be referred to the input sensitivity from
ELECTRICAL CHARACTERISTICS
FIGURE 2-5 VOLUME CONTROL
© 2004-2011 Sure Electronics Inc.
Hardware Detail
TABLE 3-1
AA-AB33184_Ver1.0_Page 7
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